/* 
 * Copyright (c) 2009, Giora Kosoi giorak@gmail.com
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the project nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY Giora Kosoi ''AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL Giora Kosoi BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef LIBEVENT_REACTOR_IMPL_H
#define LIBEVENT_REACTOR_IMPL_H

#include <sparrow/handler.h>

class Reactor;
class LibeventReactorImpl
{
    public:
        LibeventReactorImpl();
        ~LibeventReactorImpl();

        void register_input_handler(int fd, Handler *h, uint64_t token);
        void register_output_handler(int fd, Handler *h, uint64_t token);
        void register_error_handler(int fd, Handler *h, uint64_t token);
        void schedule_timer(Handler *h, const timespec &t, uint64_t token);
        
        void unregister_input_handler(uint64_t token);
        void unregister_output_handler(uint64_t token);
        void unregister_error_handler(uint64_t token);
        long cancel_timer(uint64_t token);

        void set_owner(Reactor *r);
        uint64_t create_token();
        VariantSet *registry();
        void start();

    private:

        struct EventWrapper
        {
            event e;
            char buff[1024];
            Handler *h;
            uint64_t token;
        };

        static void input_cb(int fd, short e, void *arg);
        static void output_cb(int fd, short e, void *arg);
        static void error_cb(int fd, short e, void *arg);
        static void timeout_cb(int fd, short e, void *arg);

        static void *start_thread(void *arg);
        void run();

        event_base *eb_;
        pthread_t th_;
        uint64_t current_token_;
        Reactor *owner_;
        VariantSet reg_;
        VariantSet inputs_;
        VariantSet outputs_;
        VariantSet timeouts_;
};

#endif // LIBEVENT_REACTOR_IMPL_H

